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Within the frame of macroscopic quantum electrodynamics in causal media, the van der Waals interaction between an atomic system and an arbitrary arrangement of dispersing and absorbing dielectric bodies including metals is studied. It is…

量子物理 · 物理学 2007-05-23 Stefan Yoshi Buhmann , Ho Trung Dung , Dirk-Gunnar Welsch

Atomically thin transition metal dichalcogenides (TMDs) possess coupling of spin and valley degrees of freedom, making them promising for spin-valleytronics. ln monolayer TMDs, the emission helicity is locked to the valleys as a consequence…

材料科学 · 物理学 2018-02-07 Chongyun Jiang , Fucai Liu , Jorge Cuadra , Zumeng Huang , Ke Li , Ajit Srivastava , Zheng Liu , Wei-bo Gao

Using fourth-order perturbation theory, a general formula for the van der Waals potential of two neutral, unpolarized, ground-state atoms in the presence of an arbitrary arrangement of dispersing and absorbing magnetodielectric bodies is…

量子物理 · 物理学 2007-05-23 Hassan Safari , Stefan Yoshi Buhmann , Dirk-Gunnar Welsch , Ho Trung Dung

The only way to obtain reliable empirical information on the intensity and topology of the weak magnetic fields of the quiet solar chromosphere is via the measurement and rigorous physical interpretation of polarization signals in…

天体物理学 · 物理学 2011-04-12 J. Trujillo Bueno , R. Manso Sainz

We demonstrated that a weak magnetic field can increase the permittivity, leading to a reduction in the potential barrier within the Debye sphere consisting of electrons and a nucleus. By solving the Boltzmann equation with the inclusion of…

等离子体物理 · 物理学 2023-07-26 Kiwan Park

We study spin tunnelling in molecular magnets as an instance of a mesoscopic phenomenon, with special emphasis on the molecule Fe8. We show that the tunnel splitting between various pairs of Zeeman levels in this molecule oscillates as a…

介观与纳米尺度物理 · 物理学 2009-10-31 Anupam Garg

Van der Waals forces between atoms and molecules are universally assumed to act along the line separating them. Inspired by recent works on effects which can propel atoms parallel to a macroscopic surface via the Casimir--Polder force, we…

量子物理 · 物理学 2020-09-03 Pablo Barcellona , Robert Bennett , Stefan Yoshi Buhmann

Despite its potential for device application, the non-magnetic Zeeman effect has only been predicted and observed in two-dimensional compounds. We demonstrate that non-centrosymmetric three-dimensional compounds can also exhibit a…

材料科学 · 物理学 2022-02-11 Carlos Mera Acosta , Adalberto Fazzio , Gustavo M. Dalpian

In a microlensing event, a large magnification occurs at caustic crossing and provides an opportunity to obtain a stronger signal associated with the object. In this paper we study the possibility of magnetic field detection in a…

太阳与恒星天体物理 · 物理学 2015-08-04 Ahmad Mehrabi , Habib khosroshahi , Hadi Rahmani

In this paper we have investigated the dynamics of a damped harmonic oscillator in the presence of an electromagnetic field. The transients for the two dimensional harmonic oscillator imply about the modulation of the frequency of the…

经典物理 · 物理学 2021-07-29 L. R. Rahul Biswas , Joydip Das , Bidhan Chandra Bag

The paper presents an interactive module created through the Wolfram Demonstrations Project that visualizes the Zeeman effect for the small magnetic field strengths present in the interstellar medium. The paper provides an overview of…

天体物理仪器与方法 · 物理学 2015-06-03 Lauren N. Woolsey

Van der Waals materials and heterostructures manifesting strongly bound room temperature exciton states exhibit emergent physical phenomena and are of a great promise for optoelectronic applications. Here, we demonstrate that nanostructured…

The chromoelectric polarizability of mesons governs the strength of the gluonic van der Waals force and therefore of non-quark-exchange processes in hadronic physics. We compute the polarizability of heavy mesons with the aid of lattice…

高能物理 - 唯象学 · 物理学 2014-11-17 O. Lakhina , E. S. Swanson

Photoexcited intralayer excitons in van der Waals heterostructures (vdWHs) with type-II band alignment have been observed to tunnel into interlayer excitons on ultrafast timescales. Such interlayer excitons have sufficiently long lifetimes…

介观与纳米尺度物理 · 物理学 2020-04-02 Høgni C. Kamban , Thomas G. Pedersen

The van der Waals dispersion interaction between two chiral molecules in the presence of arbirary magnetoelectric media is derived using perturbation theory. To be general, the molecular polarisabilities are assumed to be of electric,…

量子物理 · 物理学 2020-06-24 Hassan Safari , Pablo Barcellona , Stefan Yoshi Buhmann , Akbar Salam

The ground state of colloidal magnetic particles in a modulated channel are investigated as function of the tilt angle of an applied magnetic field. The particles are confined by a parabolic potential in the transversal direction while in…

软凝聚态物质 · 物理学 2014-04-02 J. E. Galván-Moya , D. Lucena , W. P. Ferreira , F. M. Peeters

When a magnetic field is applied, the mixed state of a conventional Type II superconductor gets destroyed at the upper critical field Hc2, where the normal vortex cores overlap with each other. Here, we show that in the presence weak and…

When two superconductors are connected across a ferromagnet, the spin configuration of the transferred Cooper pairs can be modulated due to magnetic exchange interaction. The resulting supercurrent can reverse its sign across the Josephson…

介观与纳米尺度物理 · 物理学 2021-01-01 H. Idzuchi , F. Pientka , K. -F. Huang , K. Harada , Ö. Gül , Y. J. Shin , L. T. Nguyen , N. H. Jo , D. Shindo , R. J. Cava , P. C. Canfield , P. Kim

A simple and computationally efficient scheme to calculate approximate imaginary-frequency dependent polarizability, hence asymptotic van der Waals coefficient, within density functional theory is proposed. The dynamical dipolar…

材料科学 · 物理学 2009-04-20 Huy-Viet Nguyen , Stefano de Gironcoli

Van der Waals interactions are ubiquitous and they play an important role for the stability of materials. Current understanding of this type of coupling is based on linear response theory, while optical nonlinearities are rarely considered…

材料科学 · 物理学 2024-08-27 Dai-Nam Le , Pablo Rodriguez-Lopez , Lilia M. Woods